Accuphase DP-570S MDS Super Audio CD Player

For decades, Accuphase Laboratory Inc. has been associated with meticulous engineering and a clear focus on signal integrity in the High-end audio segment. While many manufacturers increasingly concentrate on streaming-only solutions, Accuphase continues to regard physical media as a relevant and high-quality source. Within this context, the DP-570S is positioned as a modern SACD/CD player that also functions as a fully fledged external D/A converter, addressing listeners who value both disc collections and contemporary digital sources.

Key Facts

• Precision-engineered SACD/CD transport with vibration-optimised mechanical construction
• MDS+ D/A converter with four parallel Delta-Sigma circuits and ANCC noise-cancellation technology
• Playback of SACD, CD and data discs with Linear PCM and DSD audio files
• Comprehensive digital connectivity including USB Type B and HS-LINK
• Separate balanced and unbalanced analogue signal paths with Direct Balanced Filter topology
• Programmable playlists and display of relevant digital signal parameters

Precision Transport and Mechanical Design

The Accuphase DP-570S employs a purpose-built SACD/CD transport mounted on a multi-layer base plate with a low centre of gravity. This construction is intended to suppress mechanical resonance at its source and ensure stable disc rotation. Additional damping is provided by heavy-duty insulator feet made from carbon-rich cast metal, as well as a carefully controlled disc-loading mechanism. In practical terms, this approach supports reliable data retrieval from SACDs, standard audio CDs and recordable data discs alike.

MDS+ D/A Converter and ANCC Technology

At the digital core of the DP-570S is Accuphase’s MDS+ D/A converter architecture, operating four Delta-Sigma conversion circuits in parallel. According to the HiFi manufacturer, this configuration improves noise performance, linearity and distortion characteristics. The converter stage is complemented by ANCC technology, which uses a secondary amplifier path to cancel residual noise components from the main signal. This design is intended to enhance low-level resolution and preserve fine musical detail, particularly in complex or quiet passages.

Direct Balanced Filter and Analogue Output Stages

Analogue signal processing is handled by a Direct Balanced Filter circuit with fully separated signal paths for balanced and line outputs. Each output type is equipped with its own dedicated amplification stage, a measure aimed at minimising crosstalk and maintaining consistent signal quality. A phase selector on the balanced output allows adaptation to different system configurations, which can be especially useful in complex preamplifier and power amplifier setups.

Digital Versatility and System Integration

Beyond disc playback, the DP-570S is designed to operate as an external D/A converter for a wide range of digital sources. Digital inputs include USB, HS-LINK, S/PDIF coaxial and S/PDIF optical. The USB interface enables high-resolution audio playback from computers, while HS-LINK provides a low-jitter connection to compatible Accuphase components. Digital transport outputs can also be used, for example to integrate an external digital voicing equaliser for further fine-tuning.

For Linear PCM signals, the maximum supported sampling rate is 32 Bit and 384 kHz via USB and HS-LINK. S/PDIF coaxial supports up to 24 Bit and 192 kHz, while S/PDIF optical is limited to 24 Bit and 96 kHz. DSD signals up to DSD256, equivalent to 11,2896 MHz, can be processed via USB and HS-LINK.

Operating Concept

Operation follows a traditional Accuphase approach via the front panel controls or the supplied remote control handset. The clearly structured display provides information not only on track number and playback time, but also on sampling rate and quantisation bit depth of the current signal. Programmable playlists allow users to define individual playback sequences, a practical feature for larger disc or file-based collections.

Price and Availability

The Accuphase DP-570S is expected to become available shortly through authorised specialist retailers. At the time of writing, Accuphase Laboratory Inc. has not yet communicated an official recommended retail price.

Conclusion

With the DP-570S, Accuphase consistently pursues the idea that high-quality disc playback remains a meaningful part of modern HiFi systems. The combination of a carefully engineered transport mechanism, a powerful MDS+ D/A converter and extensive digital integration positions the player as a versatile source component rather than a single-purpose device. It is clearly aimed at listeners who wish to enjoy their SACD and CD collections at a high level while maintaining flexibility for contemporary digital sources.

Technical Specifications